Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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19.15 READ (6) - (08)
Table 175:READ (6) - (08)
The READ command requests the drive to transfer from the medium to the initiator the specified number of blocks (Transfer
Length) starting at the specified Logical Block Address (LBA).
•Logical block address field specifies the logical unit at which the READ operation shall begin.
•Transfer length field specifies the number of blocks to be transferred. A value of zero implies 256 blocks are to be
transferred.
Note: Error recovery procedure (ERP) handles errors. The error recovery parameters specified by the MODE SELECT
command control ERPs. If the drive is formatted with protection information, no protection information will be transmitted or
checked.
Byte Bit
76543210
0 Command Code = 08h
1 Reserved = 0 (MSB) LBA
2-3 Logical Block Address
(LSB)
4 Transfer Length
5 VU = 0 Reserved = 0 FLAG LINK